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https://issues.apache.org/jira/browse/HIVE-18005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16273324#comment-16273324
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Vineet Garg commented on HIVE-18005:
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Looks good to me. +1
> Improve size estimation for array() to be not 0
> -----------------------------------------------
>
> Key: HIVE-18005
> URL: https://issues.apache.org/jira/browse/HIVE-18005
> Project: Hive
> Issue Type: Sub-task
> Components: Statistics
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Attachments: HIVE-18005.01.patch, HIVE-18005.01.patch,
> HIVE-18005.02.patch
>
>
> happens only in case the array is not from a column; and the array contains
> no column references
> {code}
> EXPLAIN
> SELECT sort_array(array("b", "d", "c", "a")),array("1","2") FROM t
> ...
> Statistics: Num rows: 1 Data size: 0 Basic stats: COMPLETE
> Column stats: COMPLETE
> ListSink
> {code}
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